.container {
  max-width: 800px;
  margin: 30px auto;
  border-radius: 4px;
  box-shadow: 0 0 4px 0px rgba(0, 0, 0, 0.3);
  padding: 16px;
}
.select {
  text-align: center;

}
.carousel {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.carousel .panels > a {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  text-decoration: none;
  z-index: 1;
}

.carousel .panels > a.active {
  z-index: 10;
}


.carousel .panels > a:nth-child(even) {
  background-color: lightskyblue;
}

.carousel .panels > a:nth-child(odd) {
  background-color: lightpink;
}

.carousel .arrow {
  position: absolute;
  top: 50%;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 50%;
  background: rgba(31,45,61,.11);
  opacity: 0;
  transition: all .3s;
  outline: none;
  cursor: pointer;
}

.carousel .arrow-pre {
  left: 10px;
  transform: translateX(-10px) translateY(-50%);
}

.carousel:hover .arrow-pre {
  transform: translateX(0) translateY(-50%);
  opacity: 1;
}

.carousel .arrow-next {
  right: 10px;
  transform: translateX(10px) translateY(-50%);
}

.carousel:hover .arrow-next {
  transform: translateX(0) translateY(-50%);
  opacity: 1;
}


.carousel .arrow::before {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  border-left: 1px solid #fff;
  border-top: 1px solid #fff;
  transform: rotate(-45deg);
}

.carousel .arrow.arrow-next::before {
  transform: rotate(135deg);
}

.carousel .indicators {
  position: absolute;
  z-index: 100;
  left: 50%;
  bottom: 10px;
  transform: translateX(-50%);
  list-style: none;
  margin: 0;
  padding: 0;
}

.carousel .indicators > li {
  display: inline-block;
  padding: 5px 0;
  cursor: pointer;
}
.carousel .indicators > li::before {
  content: '';
  display: block;
  width: 30px;
  height: 2px;
  border-radius: 2px;
  background: #c0c4cc;
  transition: all .3s;
}

.carousel .indicators > li.active::before{
  background: #fff;
}